Brother International HS-5300 Service Manual - Page 49
upper, roller, motor, Timing, lower, Media, sensor, platen, supporting, spring, Eject
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2.7.2 Paper Advance Mechanism The paper advance mechanism is composed of two PA rollers, a 400 step hybrid stepper motor and the timing belt. The speed reduction ratio between the PA motor and PA roller is 1/4.5 and paper is fed by 1/300 inches in 3 steps (2-2 phases). After the paper fed from the regist roller is transported to the print position on the M-platen by the PA upper roller, printing starts. The printed paper is delivered by the PA lower roller. PA upper roller ASSY PA motor m 0 0 m Timing belt Fig. 2.25 PA lower roller ASSY Feed roller Fan Media sensor PA upper roller M-platen 0 .i. - Q-platen Q-platen supporting spring PA lower roller 0 Eject tray Air duct Fig. 2.26 11-30
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2.7.2
Paper
Advance
Mechanism
The
paper
advance
mechanism
is
composed
of
two
PA
rollers,
a
400
step
hybrid
stepper
motor
and
the
timing
belt.
The
speed
reduction
ratio
between
the
PA
motor
and
PA
roller
is
1/4.5
and
paper
is
fed
by
1/300
inches
in
3
steps
(2-2
phases).
After
the
paper
fed
from
the
regist
roller
is
transported
to
the
print
position
on
the
M
-platen
by
the
PA
upper
roller,
printing
starts.
The
printed
paper
is
delivered
by
the
PA
lower
roller.
PA
upper
roller
ASSY
PA
motor
Feed
roller
0
0
Timing
belt
Fan
m
m
0
Air
duct
PA
lower
roller
ASSY
Fig.
2.25
Media
sensor
PA
upper
roller
M
-platen
.i.
-
Q
-platen
Q
-platen
supporting
spring
PA
lower
roller
0
Eject
tray
Fig.
2.26
11-30